vsphere-esxi-vcenter-server-55-storage-guide

vSphere Storagedatastore is the new volume label to use for the UUID VMFS.NOTE If your host is registered with the vCenter Server, any changes you make to the VMFS volumelabel get overwritten by the vCenter Server. This guarantees that the VMFS label is consistent across allvCenter Server hosts.Example for Creating a VMFS File SystemThis example illustrates creating a new VMFS datastore named my_vmfs on the naa.ID:1 partition. The fileblock size is 1MB.vmkfstools -C vmfs5 -b 1m -S my_vmfs /vmfs/devices/disks/naa.ID:1Extending an Existing VMFS VolumeUse the vmkfstools command to add an extent to a VMFS volume.-Z --spanfs span_partition head_partitionThis option extends the VMFS file system with the specified head partition by spanning it across thepartition specified by span_partition. You must specify the full path name, forexample /vmfs/devices/disks/disk_ID:1. Each time you use this option, you extend a VMFS volume with anew extent so that the volume spans multiple partitions.CAUTION When you run this option, you lose all data that previously existed on the SCSI device youspecified in span_partition .Example for Extending a VMFS VolumeIn this example, you extend the logical file system by allowing it to span to a new partition.vmkfstools -Z /vmfs/devices/disks/naa.disk_ID_2:1 /vmfs/devices/disks/naa.disk_ID_1:1The extended file system spans two partitions—naa.disk_ID_1:1 and naa.disk_ID_2:1. In this example,naa.disk_ID_1:1 is the name of the head partition.Growing an Existing ExtentInstead of adding a new extent to a VMFS datastore, you can grow an existing extent using the vmkfstools -G command.Use the following option to increase the size of a VMFS datastore after the underlying storage had itscapacity increased.-G --growfs device deviceThis option grows an existing VMFS datastore or its extent. For example,vmkfstools --growfs /vmfs/devices/disks/disk_ID:1 /vmfs/devices/disks/disk_ID:1Upgrading a VMFS DatastoreYou can upgrade a VMFS3 to VMFS5 datastore.CAUTION The upgrade is a one-way process. After you have converted a VMFS3 datastore to VMFS5, youcannot revert it back.262 VMware, Inc.